Code Insight: Format generated declarations

#KT-11176 Fixed
(cherry picked from commit 3641ad6)

idea/idea-core/src/org/jetbrains/kotlin/idea/core/generateUtil.kt

@@ -23,9 +23,9 @@ import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiWhiteSpace
 import com.intellij.psi.SmartPointerManager
+import com.intellij.psi.codeStyle.CodeStyleManager
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.util.SmartList
-import org.jetbrains.kotlin.idea.core.ShortenReferences
 import org.jetbrains.kotlin.idea.util.application.runWriteAction
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.*
@@ -174,7 +174,7 @@ fun <T : KtDeclaration> insertMembersAfter(
         if (otherMembers.isNotEmpty()) {
             val body = classOrObject.getOrCreateBody()
 
-            var afterAnchor = anchor ?: findInsertAfterAnchor(editor, body) ?: return@runWriteAction emptyList()
+            var afterAnchor = anchor ?: findInsertAfterAnchor(editor, body) ?: return@runWriteAction emptyList<T>()
             otherMembers.mapNotNullTo(insertedMembers) {
                 if (classOrObject is KtClass && classOrObject.isEnum()) {
                     val enumEntries = classOrObject.declarations.filterIsInstance<KtEnumEntry>()
@@ -204,6 +204,9 @@ fun <T : KtDeclaration> insertMembersAfter(
         }
 
         insertedMembers
+    }.apply {
+        val codeStyleManager = CodeStyleManager.getInstance(classOrObject.project)
+        forEach { codeStyleManager.reformat(it) }
     }
 }